Chess South Africa Ratings Database

PLAYER PAGE

Personal

Mostert, JF (Cobus)

Chess SA id

195025231

FIDE id

Date of birth

1995-11-28 (Adult)

Gender

Male

Region

Capricorn (LCP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-07-15

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1270.1	1245.8	1307.8	1259.1
Raw rating	1270.1	1245.8	1307.8	1259.1
Weighted rating	1270.1	1245.8	1307.8	1258.9
Weighted performance	467.2	202	0	0
Floor	780.4	786.5	807.8	765.8
K-factor	36	36	36	36
Min/Max rating change allowed	150.1	155.3	142.2	152.4
Highest rating	1280.4 2018-07-01	1286.5 2018-07-01	1408.7 2023-07-01	1265.8 2018-05-01
Highest raw rating	1280.4 2018-07-01	1286.5 2018-07-01	1307.8 2024-02-01	1265.8 2018-02-01
Highest weighted rating	1280.4 2025-06-01	1286.5 2018-02-01	1307.8 2025-06-01	1265.8 2018-05-01
Highest weighted performance	1202.7 2018-07-01	1223.4 2019-02-01	1408.7 2023-07-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1270.1	1245.8	1307.8	1259.1
Analysis
Rating	1270.1	1245.8	1307.8	1259.1
Raw rating	1270.1	1245.8	1307.8	1259.1
Weighted rating	1270.1	1245.8	1307.8
Weighted performance	467.2	202	0
K-factor	36	36	36	36
Floor	780.4	786.5	807.8	765.8
Max/Min rating change allowed	150.1	155.3	142.2	152.4
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1270.1	1245.8	1307.8	1259.1
New weighted rating	1270.1	1245.8	1307.8	1259
New weighted performance	466.8	201.6	0	0
Temp new rating	1270.1	1245.8	1307.8	1259.1
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1270.1	1245.8	1307.8	1259.1
New K-factor	36	36	36	36
New floor	780.4	786.5	807.8	765.8

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	6	0	6	0
	0	0	0	0
	0	0	0	0
History	225	203	6	16

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Capricorn (LCP)
Province	Limpopo (LP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	54	27	50	0	1254.3	1254.3
Standard	39	18.5	47.44	-21.8	1270.1	1248.4
Rapid	6	3.5	58.33	70.8	1333.8	1404.6
Blitz	9	5	55.56	47.2	1132.4	1179.6

Date	Main	Standard	Rapid	Blitz
2025-09-30	1270.1	1245.8	1307.8	1259.1
2025-09-01	1270.1	1245.8	1307.8	1259.1
2025-08-01	1270.1	1245.8	1307.8	1259.1
2025-07-01	1270.1	1245.8	1307.8	1259.1
2025-06-01	1270.1	1245.8	1307.8	1259.1
2025-05-01	1270.1	1245.8	1307.8	1259.1
2025-04-01	1270.1	1245.8	1307.8	1259.1
2025-03-01	1270.1	1245.8	1307.8	1259.1
2025-02-01	1270.1	1245.8	1307.8	1259.1
2025-01-01	1270.1	1245.8	1307.8	1259.1
2024-12-01	1270.1	1245.8	1307.8	1259.1
2024-11-01	1270.1	1245.8	1307.8	1259.1
2024-10-01	1270.1	1245.8	1307.8	1259.1
2024-09-01	1270.1	1245.8	1307.8	1259.1
2024-08-01	1270.1	1245.8	1307.8	1259.1
2024-07-01	1270.1	1245.8	1307.8	1259.1
2024-06-01	1270.1	1245.8	1307.8	1259.1
2024-08-01	1270.1	1245.8	1307.8	1259.1
2024-04-01	1270.1	1245.8	1307.8	1259.1
2024-03-01	1270.1	1245.8	1307.8	1259.1
2024-02-01	1270.1	1245.8	1307.8	1259.1
2024-01-01	1270.1	1245.8	1307.8	1259.1
2023-12-01	1270.1	1245.4	1307.8	1236.6
2023-11-01	1270.1	1245.4	1307.8	1236.6

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Curro Durbanville Chess Open Rapid 2023 (Intermediate)	2023-07-15	2023-07-15	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
2	7th University of Limpopo Open 2019 (Open)	2019-09-14	2019-09-14	Standard	Capricorn (LCP)	5	5	1.5	Yes	Analysis
3	Limpopo Grand Prix Series 01 2019	2019-02-23	2019-02-23	Standard	Capricorn (LCP)	5	5	2.5	Yes	Analysis
4	2018 USSA Championship (Open)	2018-07-02	2018-07-06	Standard	Gert Sibande (MGS)	9	9	3	Yes	Analysis
5	2018 USSA Championship (Blitz)	2018-07-04	2018-07-04	Blitz	Gert Sibande (MGS)	9	9	5	Yes	Analysis
6	Strathvaal 2018 (Open)	2018-06-02	2018-06-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
7	Hervormde Kerk 2018 (Open)	2018-04-21	2018-04-21	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
8	Hervormde Kerk 2018 (A)	2018-03-10	2018-03-10	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
9	Wesvalia 2018 (Open)	2018-02-17	2018-02-17	Standard	Dr Kenneth Kaunda (NWP)	5	0	0	No	Analysis
10	Laerskool Volkskool 2018 (A+B)	2018-02-03	2018-02-03	Standard	Dr Kenneth Kaunda (NWP)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament Strathvaal 2018				Tournament 2018 USSA Championship
		date 2018-06-02	rnd 3	type Standard	result 1	date 2018-07-02	rnd 1	type Standard	result 0.5
		Opponent Raubenheimer, L (Lize)				Opponent Willenberg, CS (Chad)
2	3	Tournament Hervormde Kerk 2018				Tournament Hervormde Kerk 2018
		date 2018-04-18	rnd 1	type Standard	result 1	date 2018-04-18	rnd 3	type Standard	result 1
		Opponent Gcaiya, JN (Jeanette)				Opponent Lubbe, DS (David)
3	2	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 3	type Rapid	result 1	date 2023-07-15	rnd 4	type Rapid	result 1
		Opponent Stern, M (Mason)				Opponent Taolo, K (Kagisano)

#	Games	Start				End
1	4	Tournament Strathvaal 2018				Tournament 2018 USSA Championship
		date 2018-06-02	rnd 3	type Standard	result 1	date 2018-07-02	rnd 1	type Standard	result 0.5
		Opponent Raubenheimer, L (Lize)				Opponent Willenberg, CS (Chad)
2	3	Tournament Hervormde Kerk 2018				Tournament Hervormde Kerk 2018
		date 2018-04-18	rnd 1	type Standard	result 1	date 2018-04-18	rnd 3	type Standard	result 1
		Opponent Gcaiya, JN (Jeanette)				Opponent Lubbe, DS (David)
3	2	Tournament Limpopo Grand Prix Series 01 2019				Tournament 7th University of Limpopo Open 2019
		date 2019-02-23	rnd 5	type Standard	result 0.5	date 2019-09-14	rnd 1	type Standard	result 1
		Opponent Mauvhelwana, N (Ndalama)				Opponent Letsoalo, TE (Thabo)

#	Games	Start				End
1	2	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 3	type Rapid	result 1	date 2023-07-15	rnd 4	type Rapid	result 1
		Opponent Stern, M (Mason)				Opponent Taolo, K (Kagisano)
2	1	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 6	type Rapid	result 0.5	date 2023-07-15	rnd 6	type Rapid	result 0.5
		Opponent Ngudle, M (Mandisi)				Opponent Ngudle, M (Mandisi)
3	1	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 1	type Rapid	result 1	date 2023-07-15	rnd 1	type Rapid	result 1
		Opponent Caeser, W (Waynika)				Opponent Caeser, W (Waynika)

#	Games	Start				End
1	2	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-04	rnd 6	type Blitz	result 1	date 2018-07-04	rnd 7	type Blitz	result 1
		Opponent Mqobongo, N (Nkululeko)				Opponent Nkosi, M (Minenhle)
2	1	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-04	rnd 9	type Blitz	result 1	date 2018-07-04	rnd 9	type Blitz	result 1
		Opponent Madlala, S (Sinqobile)				Opponent Madlala, S (Sinqobile)
3	1	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-04	rnd 4	type Blitz	result 1	date 2018-07-04	rnd 4	type Blitz	result 1
		Opponent Minezha, K (Kelvin)				Opponent Minezha, K (Kelvin)

#	Games	Start				End
1	3	Tournament Strathvaal 2018				Tournament Strathvaal 2018
		date 2018-06-02	rnd 3	type Standard	result 1	date 2018-06-02	rnd 5	type Standard	result 1
		Opponent Raubenheimer, L (Lize)				Opponent Lesie, I (Itumeleng)
2	3	Tournament Hervormde Kerk 2018				Tournament Hervormde Kerk 2018
		date 2018-04-18	rnd 1	type Standard	result 1	date 2018-04-18	rnd 3	type Standard	result 1
		Opponent Gcaiya, JN (Jeanette)				Opponent Lubbe, DS (David)
3	2	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 3	type Rapid	result 1	date 2023-07-15	rnd 4	type Rapid	result 1
		Opponent Stern, M (Mason)				Opponent Taolo, K (Kagisano)

#	Games	Start				End
1	3	Tournament Strathvaal 2018				Tournament Strathvaal 2018
		date 2018-06-02	rnd 3	type Standard	result 1	date 2018-06-02	rnd 5	type Standard	result 1
		Opponent Raubenheimer, L (Lize)				Opponent Lesie, I (Itumeleng)
2	3	Tournament Hervormde Kerk 2018				Tournament Hervormde Kerk 2018
		date 2018-04-18	rnd 1	type Standard	result 1	date 2018-04-18	rnd 3	type Standard	result 1
		Opponent Gcaiya, JN (Jeanette)				Opponent Lubbe, DS (David)
3	2	Tournament Hervormde Kerk 2018				Tournament Hervormde Kerk 2018
		date 2018-03-10	rnd 1	type Standard	result 1	date 2018-03-10	rnd 2	type Standard	result 1
		Opponent Le Roux, J (Jan-Antonie)				Opponent Goliat, TT (Thamsanqa)

#	Games	Start				End
1	2	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 3	type Rapid	result 1	date 2023-07-15	rnd 4	type Rapid	result 1
		Opponent Stern, M (Mason)				Opponent Taolo, K (Kagisano)
2	1	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 1	type Rapid	result 1	date 2023-07-15	rnd 1	type Rapid	result 1
		Opponent Caeser, W (Waynika)				Opponent Caeser, W (Waynika)

#	Games	Start				End
1	2	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-04	rnd 6	type Blitz	result 1	date 2018-07-04	rnd 7	type Blitz	result 1
		Opponent Mqobongo, N (Nkululeko)				Opponent Nkosi, M (Minenhle)
2	1	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-04	rnd 9	type Blitz	result 1	date 2018-07-04	rnd 9	type Blitz	result 1
		Opponent Madlala, S (Sinqobile)				Opponent Madlala, S (Sinqobile)
3	1	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-04	rnd 4	type Blitz	result 1	date 2018-07-04	rnd 4	type Blitz	result 1
		Opponent Minezha, K (Kelvin)				Opponent Minezha, K (Kelvin)

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Bekker ,GD (Gerhardus Daniel)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Bekker ,GD (Gerhardus Daniel)	3	1318.9	1177.2	3	1322.7	1177.2	0	0	0	0	0	0
2	Radebe ,M (Mazisi)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Radebe ,M (Mazisi)	1	1186.7	761.7	1	1183.6	761.7	0	0	0	0	0	0
3	Lesie ,I (Itumeleng)	1	1	425	1	1	425	0	0	0	0	0	0
3	Lesie ,I (Itumeleng)	1	1174.8	1599.8	1	1169.2	1599.8	0	0	0	0	0	0
4	Raubenheimer ,L (Lize)	1	1	425	1	1	425	0	0	0	0	0	0
4	Raubenheimer ,L (Lize)	1	1178.9	1603.9	1	1186.2	1603.9	0	0	0	0	0	0
5	Marubini ,D (David)	1	1	425	1	1	425	0	0	0	0	0	0
5	Marubini ,D (David)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Goliat ,TT (Thamsanqa Theo)	1	1	425	1	1	425	0	0	0	0	0	0
6	Goliat ,TT (Thamsanqa Theo)	1	1378.8	1803.8	1	1378.8	1803.8	0	0	0	0	0	0
7	Malatji ,HT (Happy Tebogo)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Malatji ,HT (Happy Tebogo)	1	1441.8	1016.8	1	1435.6	1016.8	0	0	0	0	0	0
8	Selana ,M (Mzwandile)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Selana ,M (Mzwandile)	1	1353.3	928.3	1	1353.3	928.3	0	0	0	0	0	0
9	Mkize ,M (Malibongwe)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mkize ,M (Malibongwe)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Claassen ,SM (Stephanus Meyer)	1	1	425	1	1	425	0	0	0	0	0	0
10	Claassen ,SM (Stephanus Meyer)	1	1401	1826	1	1401	1826	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Mostert, JF (Cobus)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms